In-band Side Channel Using Patterned Interference for Wireless Coordination
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Solution Overview
Problem
Conventional interference management techniques in wireless communications are inefficient, leading to significant resource wastage and degraded network performance due to the need for extensive coordination among multiple users, which often results in mutual interference and collisions.
Innovation Solution
The implementation of a side channel that utilizes patterned interference data to transmit control information within the same spectrum as the main channel, allowing for efficient coordination without degrading the throughput of the main channel, using a dynamic cooperation multi-access channel (DC-MAC) protocol to schedule transmissions and employ interference patterns for control and coordination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If coordination traffic stays in the same communication channel as data traffic (in-band approach), then coordination can be achieved without dedicated resources, but communication overhead increases significantly
Solution Approach 1:
The patent segments the communication channel into two distinct channels: a main channel for data traffic and a side channel for coordination traffic. This segmentation allows coordination information to be transmitted separately from data traffic, reducing interference and overhead while maintaining adaptability for multi-user coordination.
2Reliability
If a complete radio is dedicated for coordination (out-of-band approach), then coordination effectiveness is improved, but system resources are significantly consumed
Solution Approach 1:
The patent introduces a side channel that operates in a different dimension from the main channel, allowing coordination traffic to be transmitted concurrently with data traffic without requiring a complete dedicated radio. This dimensional separation improves coordination effectiveness while conserving system resources.
3Productivity
If multiple transmissions are conducted in vicinity, then communication capacity is utilized, but mutual interference and collisions occur
Solution Approach 1:
The side channel acts as an intermediary that carries coordination information between users. This intermediary channel enables users to negotiate and coordinate their transmissions on the main channel, allowing multiple transmissions to occur simultaneously while reducing mutual interference and collisions through proactive coordination.
Data Source
AI summary
Systems, methods, and apparatus are described that employ specially designed interference patterns to build an in-band side channel without degrading the effective throughput of the main channel. A first device (100) includes a control component (130) that generates control information and an interference component (140) that transmits the control information (450) through emission of patterned interference data concurrently while other users are transmitting other data (420). A second device (300) receives the patterned interference data and the other data via a single antenna (350) and decodes the patterned interference data to extract the control data (450). The first device (100) transmits the other data (420) on a side channel (440) that resides in the same spectrum as the main channel (410) in which the other data (420) is emitted. The first device (100) encodes the interference patterns such that the control data (450) can be safely transmitted and extracted without effecting other data transmission. In one aspect, devices (100, 200, 300) can employ a dynamic cooperation multi-access channel (DC-MAC) protocol (1510) to schedule transmission of the other data (420) on the main channel (410), and to employ the side channel (440) for control and coordination.